2015
| Step 1 |
|
Step 2 |
|
Step 3 |
|
Get Mean Scale Score from line numbers in this
data file.
|
|
Subtract 'met min'
Scale Score.
from Mean Scale Score to get
Distance From Standard
|
|
Multiply Distance From Standard by
proportion of students in grade.
|
| Grade |
Line
number |
Mean
Scale
Score |
- |
Scale
Score:
met min |
= |
Distance
from
standard |
* |
(Students
tested
in grade |
/ |
Students)
tested
in
school |
= |
Weighted
Distance
From
Standard |
| 3 |
88865 |
2370 |
- |
2436 |
= |
-66 |
* |
(91 |
/ |
248)
|
= |
-24.21774188 |
| 4 |
88868 |
2414 |
- |
2485 |
= |
-71 |
* |
(81 |
/ |
248)
|
= |
-23.18951611 |
| 5 |
88869 |
2469 |
- |
2528 |
= |
-59 |
* |
(76 |
/ |
248)
|
= |
-18.08064511 |
| Step 4 |
SUM Weighted Distance From Standard to get
2015 Difference From Standard for Garfield Elementary
|
-65 |
2016
| Step 1 |
|
Step 2 |
|
Step 3 |
|
Get Mean Scale Score from line numbers in this
data file.
|
|
Subtract 'met min'
Scale Score.
from Mean Scale Score to get
Distance From Standard
|
|
Multiply Distance From Standard by
proportion of students in grade.
|
| Grade |
Line
number |
Mean
Scale
Score |
- |
Scale
Score:
met min |
= |
Distance
from
standard |
* |
(Students
tested
in grade |
/ |
Students)
tested
in
school |
= |
Weighted
Distance
From
Standard |
| 3 |
2491 |
2386 |
- |
2436 |
= |
-50 |
* |
(82 |
/ |
259)
|
= |
-15.8301158 |
| 4 |
2493 |
2416 |
- |
2485 |
= |
-69 |
* |
(92 |
/ |
259)
|
= |
-24.5096525 |
| 5 |
2495 |
2442 |
- |
2528 |
= |
-86 |
* |
(85 |
/ |
259)
|
= |
-28.22393821 |
| Step 4 |
SUM Weighted Distance From Standard to get
2016 Difference From Standard for Garfield Elementary
|
-69 |
2017
| Step 1 |
|
Step 2 |
|
Step 3 |
|
Get Mean Scale Score from line numbers in this
data file.
|
|
Subtract 'met min'
Scale Score.
from Mean Scale Score to get
Distance From Standard
|
|
Multiply Distance From Standard by
proportion of students in grade.
|
| Grade |
Line
number |
Mean
Scale
Score |
- |
Scale
Score:
met min |
= |
Distance
from
standard |
* |
(Students
tested
in grade |
/ |
Students)
tested
in
school |
= |
Weighted
Distance
From
Standard |
| 3 |
2564 |
2390 |
- |
2436 |
= |
-46 |
* |
(91 |
/ |
268)
|
= |
-15.61940295 |
| 4 |
2565 |
2406 |
- |
2485 |
= |
-79 |
* |
(86 |
/ |
268)
|
= |
-25.35074624 |
| 5 |
2568 |
2453 |
- |
2528 |
= |
-75 |
* |
(91 |
/ |
268)
|
= |
-25.46641785 |
| Step 4 |
SUM Weighted Distance From Standard to get
2017 Difference From Standard for Garfield Elementary
|
-66 |
2018
| Step 1 |
|
Step 2 |
|
Step 3 |
|
Get Mean Scale Score from line numbers in this
data file.
|
|
Subtract 'met min'
Scale Score.
from Mean Scale Score to get
Distance From Standard
|
|
Multiply Distance From Standard by
proportion of students in grade.
|
| Grade |
Line
number |
Mean
Scale
Score |
- |
Scale
Score:
met min |
= |
Distance
from
standard |
* |
(Students
tested
in grade |
/ |
Students)
tested
in
school |
= |
Weighted
Distance
From
Standard |
| 3 |
2567 |
2387 |
- |
2436 |
= |
-49 |
* |
(104 |
/ |
283)
|
= |
-18.00706713 |
| 4 |
2569 |
2428 |
- |
2485 |
= |
-57 |
* |
(94 |
/ |
283)
|
= |
-18.93286219 |
| 5 |
2571 |
2422 |
- |
2528 |
= |
-106 |
* |
(85 |
/ |
283)
|
= |
-31.83745574 |
| Step 4 |
SUM Weighted Distance From Standard to get
2018 Difference From Standard for Garfield Elementary
|
-69 |
2019
| Step 1 |
|
Step 2 |
|
Step 3 |
|
Get Mean Scale Score from line numbers in this
data file.
|
|
Subtract 'met min'
Scale Score.
from Mean Scale Score to get
Distance From Standard
|
|
Multiply Distance From Standard by
proportion of students in grade.
|
| Grade |
Line
number |
Mean
Scale
Score |
- |
Scale
Score:
met min |
= |
Distance
from
standard |
* |
(Students
tested
in grade |
/ |
Students)
tested
in
school |
= |
Weighted
Distance
From
Standard |
| 3 |
2589 |
2403 |
- |
2436 |
= |
-33 |
* |
(109 |
/ |
314)
|
= |
-11.45541398 |
| 4 |
2590 |
2425 |
- |
2485 |
= |
-60 |
* |
(102 |
/ |
314)
|
= |
-19.49044584 |
| 5 |
2591 |
2437 |
- |
2528 |
= |
-91 |
* |
(103 |
/ |
314)
|
= |
-29.85031841 |
| Step 4 |
SUM Weighted Distance From Standard to get
2019 Difference From Standard for Garfield Elementary
|
-61 |
Last steps
Compute the average
| 2015 |
2016 |
2017 |
2018 |
2019 |
Sum |
Average |
|
-65
|
-69
|
-66
|
-69
|
-61
|
-330.0 |
-66.0 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -57.0
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -75.0
For the lines, you have the data necessary to plot the chart.
Very last step
The percent of students getting a Free or Reduced Price Meal comes from the following sources:
